/**
* Get constraint
*
* @param string $constraintName
* @param string $table
* @param string $schema
* @param string $database
* @return Object\ConstraintObject
*/
public function getConstraint($constraintName, $table, $schema = null)
{
if ($this->constraintData == null) {
$this->loadConstraintData();
}
$found = false;
foreach ($this->constraintData as $tableName => $constraints) {
foreach ($constraints as $constraintData) {
if ($tableName == $table && $constraintData['name'] == $constraintName) {
$found = $constraintData;
break 2;
}
}
}
if (!$found) {
throw new \Exception('invalid constraint, or constraint not found');
}
$constraint = new Object\ConstraintObject($found['name'], $table);
$constraint->setType($found['type']);
$constraint->setKeys($this->getConstraintKeys($found['name'], $table, $schema));
return $constraint;
}
/**
* Get constraint
*
* @param string $constraintName
* @param string $table
* @param string $schema
* @param string $database
* @return Object\ConstraintObject
*/
public function getConstraint($constraintName, $table, $schema = null)
{
// set values for database & schema
$database = $database ?: '__DEFAULT_DB__';
if ($schema == null && $this->defaultSchema != null) {
$schema = $this->defaultSchema;
}
if (!isset($this->data[$database][$schema]['constraints'])) {
$this->loadConstraintData($schema, $database);
}
$found = false;
foreach ($this->data[$database][$schema]['constraints']['names'] as $constraintInfo) {
if ($constraintInfo['constraint_name'] == $constraintName && $constraintInfo['table_name'] == $table) {
$found = $constraintInfo;
break;
}
}
if (!$found) {
throw new \Exception('Cannot find a constraint by that name in this table');
}
$constraint = new Object\ConstraintObject($constraintName, $table, $schema);
$constraint->setType($found['constraint_type']);
$constraint->setKeys($this->getConstraintKeys($constraintName, $table, $schema, $database));
return $constraint;
}